Looks like Today is going to be big in the BlackBerry world, with RIM expected to make a big announcment regarding changes to the way BIS works with your phone. We don’t know too much yet, but we (as always) do have some rumors to work with.

First, it looks like RIM is going to be making BIS work more like BES with “BlackBerry Shield for BIS”. These features (as reported yesterday by BBleaks) are likely to include OTA syncing and remote wiping, as well as al your other BES goodies. I’m on a BES server and I have to say, I think OTA syncing is probably my favorite thing about my BB. No matter where I am, I can add/update a contact and have it sync with my desktop – excellent for when traveling or on business trips. So, for all your BIS users (both consumers and small business users), you’ve got that going for you…which is nice.

Also, RIM is rumored to be announcing a little something called BESX – BlackBerry Enterprise Server Express. This is supposed to include a free, and unlimited, BlackBerry Enterprise Server.

The features are allegedly debuting March 1.

That’s about all we know for now, but we’ll keep you updated. And be ready for big news later today!

****UPDATE****

We just received word that BESX has been confirmed via Blackberry.com